# Chapter 2 - Differentiation - Review Exercises: 22

The slope of the tangent at the point $(1, -1)$ is $2.$

#### Work Step by Step

$f'(x)=\dfrac{d}{dx}(3x^2)-\dfrac{d}{dx}(4x)=6x-4.$ $f'(1)=6(1)-4=2.$

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